890 BIOLOGY OF THE SEAS OF THE U.S.S.R. 



Usatchev, P. 1941. Phytoplankton of the Caspian Sea. (In press.) (R) 

 Usatchev, P. 1946. Phytoplankton collected by the Sedov Expedition 



1937-1939. Tr. drift-exped. on ice-breaker G. Sedov, 1937-1939, 3, biol. 



(E.s.) 

 Usatchev, P. 1946. Biological indicators of the origin of ice-floes in the Kara 



sea and sea of Brothers Laptev and the Strait of the Franz-Josef Land 



Archipelago. Tr. WAN, 1 (E.s.) 

 Usatchev, P. 1947. General characteristics of the phytoplankton of the Seas 



of USSR. Recent Advanc. Biol. 23, 2 (R) 

 Usatchev, P. 1948. Quantitative fluctuations of phytoplankton in the 



northern Caspian Sea area. Tr. WAN, 2 (R) 

 Uschakov, P. (Uschakow, Ouchakoff). 1924. Season-changes in the littoral 



of the Kola fjord. Tr. L.O.E. 59, 1. 

 Uschakov, P. 1931. Bioconosen der Meeresstrasse Matotschkin Schar auf 



Nowaja Semlja. Expl. Mers URSS, 12 (G.s.) 

 Uschakov, P. 1934. Some particularities of fauna and hydrographical con- 

 ditions on the Okhotsk Sea. Priroda, 11 (R) 

 Uschakov, P. 1936. On the benthic fauna of the Chukotsk Sea. Sci. results 



Exped. on the ice-breaker Krassin in 1935 (R) 

 Uschakov, P. 1940. The Okhotsk Sea. Marine volumes, 1 (R) 

 Uschakov, P. 1945. Bottom life in the Tchuktchi Sea, as flow-indicator. 



Repts. GOI, 31, 32 (R) 

 Uschakov, P. 1949. The system of vertical zones in the Okhotsk-Sea. DAN, 



USSR, 68, 4 (R) 

 Uschakov, P. 1951. The littoral of the Okhotsk Sea. Ibid. 76, 1 (R) 

 Uschakov, P. 1952. The Tchuktchi Sea and its bottom-fauna. Extreme north- 

 east of the USSR, 2 (R) 

 Uschakov, P. 1953. The fauna of the Okhotsk Sea and its life conditions. 



Ed. ZIN Acad. Sci. USSR (R) 

 Uschakov, P. 1955. Polychaetes of the far-eastern seas of the USSR. Ibid. 



(R) 



Uschakov, P. 1955. On the importance of the Laperouse strait in the forma- 

 tion of the fauna in south-western part of the Okhotsk Sea. DAN, USSR, 

 105, 6 (R) 



Uspensky, S. 1959. Colonial sea breeding birds of the Northern and far- 

 eastern seas of the USSR, their biotopic distribution, number and role as 

 plankton and benthos consumers. Bull. MOIP, biol. 64, 2 (E.s.) 



Valikangas, I. 1926. Planktologische Untersuchungen im Hefengebiet von 

 Helsingfors. Acta. Zool. Fenn. 1. 



Valikangas, I. 1933. Uber die Biologie der Ostsee als Brakwassergebiet 

 Verhandl. Intern. Verein. theor. angew. Limnol. 6. 



Vasnetzov, W. 1931. Hydrology of the Kara Sea. Tr. GOIN, 1, 2-3 (R) 



Vasnetzov, W. 1936. Materials on the hydrology of the Kara Sea in the 

 connection with the influence of the Atlantic waters on its regime. Ed. 

 Glavsermorput (R) 



Velokurov, N. and Starov, D. 1946. Hydrometeorological characteristic of 

 the Black Sea. Moscow (R) 



